-34.07% is the change from 813 to 536
Calculation steps:
[( 536 - 813 ) ÷ 813] x 100 = -34.07%
Formula
Percentage change = [(536 - 813) / 813] x 100
Subtract the new number by the original number
536 - 813 = -277
-277 ÷ 813 = -0.34071340713407133
-0.34071340713407133 x 100 = -34.07%